EP4175864A1 - Verfahren zur überprüfung eines lichtraums für ein schienenfahrzeug - Google Patents
Verfahren zur überprüfung eines lichtraums für ein schienenfahrzeugInfo
- Publication number
- EP4175864A1 EP4175864A1 EP21769357.1A EP21769357A EP4175864A1 EP 4175864 A1 EP4175864 A1 EP 4175864A1 EP 21769357 A EP21769357 A EP 21769357A EP 4175864 A1 EP4175864 A1 EP 4175864A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- digital twin
- route
- rail vehicle
- track
- digital
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/04—Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
- B61L23/041—Obstacle detection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/60—Testing or simulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0072—On-board train data handling
Definitions
- the invention relates to a method for checking a clearance for a rail vehicle, as well as a computer program product and a data carrier.
- a new vehicle with new dimensions is to be used on an existing route network for rail vehicles, it must first be checked whether the new, for example multi-section train can pass all points of the existing track network without any problems.
- the vehicle dynamics e.g. a rigid car body on movable chassis, is difficult to assess.
- Typical problems are collisions with buildings, platform edges or street signs or collisions with other trains on a neighboring track, especially in tight bends.
- WO 2006/008292 A1 describes a method for monitoring a route of a rail vehicle. In the event of a violation of a specified standard clearance gauge, a check is carried out to determine whether the obstacle is known.
- the WHERE 2004/028881 A1 apparently a suitable sensor system for road monitoring.
- the clearance gauge of the vehicle is also calculated in curves to avoid collisions.
- Camera, laser, radar and lidar systems in particular are used today to capture the surroundings of a rail vehicle.
- Digital twins are digital representations and thus virtual replicas of machines or systems that include all relevant data and simulation models. In addition to the models of the represented object, they also contain simulations that describe the properties or the behavior of the represented object.
- the object of the invention is to identify possible collisions between a new rail vehicle and objects on a route in a simple and reliable manner.
- a method for checking a clearance for a rail vehicle comprises the following method steps: a. reading in a digital twin of a route for the rail vehicle; b. Reading in a digital twin of the rail vehicle; c. Simulating a journey of the digital twin of the rail vehicle on a specified track of the digital twin of the route; i.e. Detection of collisions between the digital twin of the rail vehicle and the digital twin of the route.
- the rail vehicle comprises at least one car body, but in particular at least two car bodies coupled to one another. It can also be a multi-unit rail vehicle. If it is a rail vehicle with only one car body, this is usually supported on two running gears or bogies. In the case of multi-part rail vehicles, individual car bodies can only be supported on one chassis or bogie.
- the route is to be understood here in such a way that it includes both the route, i.e. the track, of the rail vehicle and the traffic area along the given track. This in turn includes the space on or beside or above the track.
- the digital twin of the route includes therefore, in addition to the specified track and its position and course, also the traffic space along the specified track and thus objects in the vicinity of the track.
- the clear space for the rail vehicle is defined by the route
- the clearance gauge for the rail vehicle It could also be referred to as the clearance gauge for the rail vehicle.
- the loading gauge of the rail vehicle defines the clear space in the traffic space that must be kept free for the rail vehicle on the track, since otherwise collisions with the rail vehicle could occur. If the free clearance for the rail vehicle, which is delimited by the route, and the clearance profile of the rail vehicle touch, overlap or overlap, collisions occur between objects on the route and the rail vehicle.
- the loading gauge of the rail vehicle is therefore primarily dependent on the dimensions of the rail vehicle, both in vertical cross-sectional planes of the rail vehicle and in horizontal longitudinal sections, and on the course of the track on which the rail vehicle is running.
- the area required by the rail vehicle is limited by an inner and an outer curve, the so-called envelope curve, which in turn are formed by the relevant outer points of the rail vehicle.
- the clearance profile results from the integral of the superimposed envelope curves.
- the loading gauge can depend on the speed, the weight and its center of gravity or on accelerations of the rail vehicle, especially in curves.
- the course of the track, in particular curve radii and track superelevation play an important role.
- a rail vehicle driving fast through a curve can have a different inclination than the identical rail vehicle driving slowly through the identical curve.
- the digital twin of the rail vehicle also includes information on the dynamic behavior of the rail vehicle during travel, hereinafter referred to as dynamics, in order to be able to map cornering at different speeds, for example. This includes, for example, information on turning angles of the chassis or spring rates of the suspension.
- dynamics information on the dynamic behavior of the rail vehicle during travel
- Possible collisions of the digital twin of the rail vehicle with the digital twin of the route i.e. violations of the dynamic structure gauge of the digital twin of the rail vehicle by at least one object of the digital twin of the route, are determined and recognized.
- the proposed solution enormous reduces the manual testing effort for new vehicles and reduces the work to the creation of the digital twin of the route and the vehicle model. The simulation can then take place fully automatically.
- Such a method has the advantage that different vehicle models with different dimensions can be tested without manual effort and repeated access to the route. This is relevant for the railway network operator and the vehicle manufacturer in the tendering phase.
- the resulting 3D visualization enables a quick and spatial understanding of any problem and bottlenecks and can also be used for communication purposes.
- a further advantage of the invention is that possible collisions of a rail vehicle with objects on a route can be detected easily and reliably and, above all, early on, especially during the development of the rail vehicle, or even during the planning of modifications to the route.
- step c. Reading in a digital twin of another rail vehicle on a neighboring track of the digital twin of the route; that the method step c. includes:
- step d. Simulating a journey of the digital twin of another rail vehicle on an adjacent track of the digital twin of the route; that the method step d. includes:
- the rail vehicle for which the loading gauge is checked can be designated as the first rail vehicle.
- the further developed method for checking a clearance for a first rail vehicle can therefore be described as follows: a. reading in a digital twin of a route for the first rail vehicle; b. reading in a digital twin of the first rail vehicle; and if necessary
- the additional, second rail vehicles can be any rail vehicles.
- a collision between the specified digital twin of the further specified, any second rail vehicle on the adjacent second track, which runs parallel to the first track, for example, and the digital twin of the first rail vehicle on the first track of the route is recognized analogously touch ments, overlaps or overlaps of the corresponding calculated or simulated clearance gauges of the respective digital twins of the first and second rail vehicles.
- the visualization can take place by means of an output or display unit, such as a screen.
- the visualization is issued to a user.
- a suitably designed game engine in particular with functions for physics simulation and 3D rendering, can be used.
- game engines such as the Unity Engine, are known in principle to those skilled in the art.
- the measure can be, for example, a change in the design of the first rail vehicle or a structural change, for example, to the route.
- Process step c includes a further development:
- the clearance gauge of the digital twin of the first rail vehicle and, if applicable, the second rail vehicle is calculated as a further function of at least one specified speed of the digital len twin of the first and, if applicable, the further, second rail vehicle on the respective predetermined first and, if applicable, the adjacent, second track of the digital twin of the route.
- the clearance gauge of the first rail vehicle is calculated depending on the course of the first track of the digital twin of the route. This takes place at several points of the digital twin of the route, in particular in a predetermined, close succession, so that in particular the entire course of the route can be adequately mapped.
- the position and location of one or more car bodies of the digital twin of the first rail vehicle can be calculated, in particular as a function of a calculated position of the corresponding running gear or bogies.
- This is calculated based on the course of the track, i.e. depending on curve radii, transition curves and/or track superelevation.
- the calculations may also be carried out as a function of a specified, assumed speed and possibly also as a function of a specified, assumed weight and its distribution on the first rail vehicle and/or as a function of an assumed acceleration of the digital twin of the first rail vehicle.
- the dynamics can include not only the above, but also other moving parts or assemblies of the rail vehicle.
- controllable components such as pivoting or pivoting sliding doors or extendable stepping platforms can be relevant.
- process step c. could therefore also include:
- the clearance gauge of the digital twin of the first rail vehicle could be calculated at predetermined points along the route, in particular on platforms, at least as a function of an open door of the digital twin of the first rail vehicle.
- the recording of information to describe the rail vehicle includes in particular the reading in of information about the construction and the dynamics of the rail vehicle.
- Information on the construction of the rail vehicle can also be found in construction documents, in particular from 3D CAD data or other 3D models.
- Information on the dynamic behavior of the rail vehicle can also already be contained in the 3D models.
- simulations of the virtual rail vehicle are used, which contain the dynamics for which, for example, an assembly-based representation is assumed; e.g. knowledge of how the car body and bogies can move mechanically in relation to one another.
- the digital twin of the rail vehicle can then be created.
- method step a therefore ahead: acquiring information along the route to describe the route;
- a suitably designed sensor system is used to record the information for describing the route, which is arranged on or on any rail vehicle that travels along the route.
- the rail vehicle can differ in design, shape and/or size from the rail vehicle for which the loading gauge is checked.
- Suitable sensor systems are known from the prior art, such as the Trimble MX9.
- the sensor system can have at least one image recording device, for example a camera, for capturing a traffic area of the vehicle, in particular one located in front of the vehicle in the direction of travel.
- the sensor system can also have distance sensors, such as radar or lidar.
- the image recording devices can be oriented forwards in the direction of travel for detecting the traffic area of the vehicle located in front of the vehicle in the direction of travel and to the side for detecting the traffic area of the vehicle located next to the vehicle. They can also be oriented upwards and/or backwards to cover the traffic space of the vehicle located above and/or behind the vehicle.
- a suitable evaluation device can be provided for evaluating the recorded data.
- image, lidar and/or radar data including position and location information can be recorded at several points along the route, in particular by means of the suitably designed sensor system, which is arranged on any rail vehicle that is traveling along the route.
- the information is used for the, in particular geometric, description of objects on the route, in particular for the description of their shape, position and size, which the limit the free clearance of the route.
- the recorded information is suitable for creating a digital model, in particular a 3D model, of the route or of the free clearance for a rail vehicle along the route.
- a three-dimensional image of the route and thus the area around the route for the rail vehicle can then be created, in particular comprising a point cloud or a grid, with known track layouts including superelevation, transition curves, curve radii and track center distances, decorative lines and switches.
- the digital twin of the route is not limited to a point cloud or a grid, with known track layouts including superelevation, transition curves, curve radii and track center distances, decorative lines and switches.
- conversions can also be planned or simulated using the digital twin.
- a computer program product according to the invention comprises commands which, when the program is executed by a suitable mobile terminal, cause the latter to execute the method according to the invention.
- the computer program product according to the invention is stored on a data carrier according to the invention.
- Any storage medium for storing data can be used as a data carrier. This also includes electronic semiconductor memories.
- a device is set up to carry out the method according to the invention.
- it includes the means suitable for carrying out the respective process step, some of which have already been mentioned: - At least one memory for reading in a digital twin of a route for the rail vehicle; - At least one memory for reading in a digital twin of the first rail vehicle; and if necessary
- At least one computing unit for simulating a journey of the digital twin of the first rail vehicle on the specified, first track of the digital twin of the route; and optionally - for simulating a journey of the digital twin of the additional, second rail vehicle on the adjacent, second track of the digital twin of the route; - as well as for detecting collisions of the digital twin of the first rail vehicle with the digital twin of the route; and optionally -to detect collisions of the digital twin of the first rail vehicle with the digital twin of the additional, second rail vehicle on the adjacent, second track of the route.
- the device can include an output unit for visualizing a detected collision of the digital twin of the rail vehicle with the digital twin of the route or with the digital twin of the other rail vehicle on an adjacent track of the route.
- the computing unit is suitably designed to carry out the corresponding method steps and advantageously has a high computing power. It can also be formed from a number of individual computing units.
- the device can preferably be a high-performance server, in particular one or more cloud servers. Both volatile memory, such as RAM, and non-volatile memory, such as ROM, can serve as memory.
- the device includes a suitably designed sensor system for acquiring information for describing the route along the predetermined track, which is arranged on or on any rail vehicle that travels along the route.
- FIG. 1 schematically shows a flow chart of an embodiment of the method according to the invention
- FIG. 2 schematically shows any rail vehicle with a sensor system for acquiring information for describing the route.
- step 1 shows a flow chart of a method according to the invention.
- a digital twin of the route if necessary also of the entire route network of an operator, is created with a 3D scanner. Ready-to-use sensor systems can be used for this, but also individual lidar sensors that can be mounted on any vehicle.
- the digital twin consists of the 3D environment as a point cloud or grid and known track layouts including superelevation.
- This digital twin of the rail vehicle and the digital twin of the route are then read in (step 2).
- the journey of the virtual dynamic rail vehicle is now simulated.
- the position of at least one vehicle body is calculated for each point on a specified track, taking into account the dynamics of the bogies (rotation angle of the bogies depending on the course of the track, in particular its curve radius).
- An inclination of the rail vehicle as a function of the course of the track, in particular its superelevation, and possibly as a function of an assumed speed and an assumed weight (including weight distribution) of the rail vehicle can also be taken into account. This allows the precise clearance gauge to be determined for every position of the rail vehicle along the course of the track.
- the structure gauge is known for each route section, it can now be simulated whether the dynamic structure gauge collides with parts of the environment. It can also be simulated whether the gauges of two vehicles that are on two adjacent tracks touch.
- a game engine eg Unity Engine, with corresponding functions for physics simulation and 3D rendering can be used for the simulation of the journey including the collision check and for visualization purposes.
- Any rail vehicle 5 is sketched in FIG. 2 with a suitable sensor system 6 mounted on it.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020210821.8A DE102020210821A1 (de) | 2020-08-27 | 2020-08-27 | Verfahren zur Überprüfung eines Lichtraums für ein Schienenfahrzeug |
| PCT/EP2021/073151 WO2022043213A1 (de) | 2020-08-27 | 2021-08-20 | Verfahren zur überprüfung eines lichtraums für ein schienenfahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4175864A1 true EP4175864A1 (de) | 2023-05-10 |
Family
ID=77726440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21769357.1A Pending EP4175864A1 (de) | 2020-08-27 | 2021-08-20 | Verfahren zur überprüfung eines lichtraums für ein schienenfahrzeug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4175864A1 (de) |
| DE (1) | DE102020210821A1 (de) |
| WO (1) | WO2022043213A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115171510A (zh) * | 2022-05-06 | 2022-10-11 | 北京工商大学 | 基于工业互联网标识解析的大米供应链数字孪生教学用具 |
| CN116049972A (zh) * | 2022-11-09 | 2023-05-02 | 中车大连机车车辆有限公司 | 机车车辆曲线通过能力的运动仿真计算方法、设备及介质 |
| DE102024202973B3 (de) | 2024-03-28 | 2025-07-31 | Siemens Mobility GmbH | Verfahren und Vorrichtung zur Erzeugung eines digitalen Abbilds einer Trasse eines Schienenfahrzeugs |
| DE102024202974A1 (de) | 2024-03-28 | 2025-10-02 | Siemens Mobility GmbH | Verfahren und spurgeführtes Fahrzeug zur Positionsbestimmung des spurgeführten Fahrzeugs |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10244127A1 (de) | 2002-09-27 | 2004-04-08 | Siemens Ag | Sensorsystem zur Fahrwegüberwachung für eine autonome mobile Einheit, Verfahren sowie Computerprogramm mit Programmcode-Mitteln und Computerprogramm-Produkt zur Überwachung eines Fahrwegs für eine autonome mobile Einheit |
| TW200604047A (en) | 2004-07-22 | 2006-02-01 | Siemens Ag | Method to detect an obstruction on a railroad |
| KR20120048847A (ko) * | 2010-11-08 | 2012-05-16 | 한국철도기술연구원 | 철도차량의 동적차량한계 모델링 해석 및 영향도 분석 방법 |
| DE102014206473A1 (de) | 2014-04-03 | 2015-10-08 | Bombardier Transportation Gmbh | Automatische Assistenz eines Fahrers eines fahrspurgebundenen Fahrzeugs, insbesondere eines Schienenfahrzeugs |
| EP3287861A1 (de) | 2016-08-24 | 2018-02-28 | Siemens Aktiengesellschaft | Verfahren zum testen eines autonomen systems |
| JP7062407B2 (ja) * | 2017-11-02 | 2022-05-06 | 株式会社東芝 | 支障物検知装置 |
| GB201802475D0 (en) | 2018-02-15 | 2018-04-04 | Jaguar Land Rover Ltd | Controller and vehicle |
| US10843689B2 (en) | 2018-06-13 | 2020-11-24 | Toyota Jidosha Kabushiki Kaisha | Collision avoidance for a connected vehicle based on a digital behavioral twin |
-
2020
- 2020-08-27 DE DE102020210821.8A patent/DE102020210821A1/de not_active Withdrawn
-
2021
- 2021-08-20 WO PCT/EP2021/073151 patent/WO2022043213A1/de not_active Ceased
- 2021-08-20 EP EP21769357.1A patent/EP4175864A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102020210821A1 (de) | 2022-03-03 |
| WO2022043213A1 (de) | 2022-03-03 |
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